KR20010089683A - Method for detecting and controlling the level of liquid metal in an ingot mold - Google Patents
Method for detecting and controlling the level of liquid metal in an ingot mold Download PDFInfo
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- KR20010089683A KR20010089683A KR1020017008002A KR20017008002A KR20010089683A KR 20010089683 A KR20010089683 A KR 20010089683A KR 1020017008002 A KR1020017008002 A KR 1020017008002A KR 20017008002 A KR20017008002 A KR 20017008002A KR 20010089683 A KR20010089683 A KR 20010089683A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/245—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid with a probe moved by an auxiliary power, e.g. meter, to follow automatically the level
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/268—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Continuous Casting (AREA)
Abstract
본 발명은 특히 상하로 동작할 수 있어서 주형의 빈 공간 내로 장입될 수 있는 측정 부재를 구비하는 철강용 연속주조 설비를 위해 주형 내에 존재하는 용융 금속의 레벨을 탐지하고 제어하기 위한 방법 빛 장치에 관한 것으로, 용융 금속은 차단할 수 있는 바닥 개구부를 구비하는 공급 용기로부터 침전관을 통해 주형에 공급될 수 있다. 이때 레벨 측정 부재(42)는 제1 신호선(31)을 통해 컴퓨터(41)와 연결되고, 컴퓨터는 제1 제어선(51)을 통해 제1 액추에이터(61)과 연결되며, 제1 액추에이터에 고정된 연장 암(71)의 헤드 단부에 레벨 측정 부재(42)를 장착한다. 연장 암(71)에 구비되는 위치 센서(43)는 제2 신호선(32)을 통해 컴퓨터(41)와 연결되고, 컴퓨터는 제2 제어선(52)을 통해 제2 액추에이터(62)와 연결되며, 제2 액추에이터는 공급 용기(11)의 바닥 개구부(12)를 차단하기 위한 밀폐 장치(81)와 연결된다.The present invention relates in particular to a method light apparatus for detecting and controlling the level of molten metal present in a mold for a continuous casting installation for steel having a measuring member which can be operated up and down to be inserted into the empty space of the mold. As such, molten metal can be supplied to the mold through a settling tube from a supply vessel with a bottom opening that can block. In this case, the level measuring member 42 is connected to the computer 41 through the first signal line 31, and the computer is connected to the first actuator 61 through the first control line 51 and fixed to the first actuator. The level measuring member 42 is attached to the head end of the extended arm 71. The position sensor 43 of the extension arm 71 is connected to the computer 41 through the second signal line 32, and the computer is connected to the second actuator 62 through the second control line 52. The second actuator is connected with a sealing device 81 for blocking the bottom opening 12 of the supply container 11.
Description
주형, 특히 슬래브(slab) 박판 연속주조 설비용 주형 내에서 액상 금속의 레벨 측정에 대한 필요성이 점점 더 커지고 있다. 빌렛(billet) 배출 속도가 4m/min 내지 6m/min일 때 연속주조 장치들의 경우 측정 오류는 극히 미미할 수 있는데, 특히 신호에 따른 동작이 빠를수록 그러하다.There is an increasing need for level measurement of liquid metals in molds, especially molds for slab sheet continuous casting installations. In case of continuous casting apparatuses when the billet discharge rate is 4m / min to 6m / min, the measurement error can be extremely small, especially when the signal action is faster.
EP 0 150 670에 기재된 방법 및 장치의 경우, 측정 코일(exploring coil)로써 용융 금속에 인가된 와전류(渦電流, eddy current)는 측정 코일 및 용융 금속 간의 간격에 대한 단위(dimension)로 사용되고, 이 경우 용융 금속 표면상의 와전류 크기를 설정치와 비교하여, 설정치 및 현재치의 차이에 따라 용융 금속의 유입량을 조절한다. 앞서 개시된 장치의 경우, 측정 코일은 높이가 변화되도록 형성될 수 있는 유도관에 고정된다. 측정 헤드와 용융 금속 간의 최대 간격은 약 20 mm이다. 금속의 레벨을 추가로 낮출 필요가 있는 경우, 측정 코일로 유도관을 낮출 수 있다. 이러한 장치의 단점은 선형 측정이 아니라는 것이다. 주조가 이루어지는 동안 금속 레벨의 변동시 측정 코일 내에 임피던스 변동(impedance fluctuation)이 발생하는데, 이것은 측정 대상에 인가된 와전류가 옴 손실(ohmic loss)로 나타나기 때문이다. 이러한 임피던스 변동값은 전자 장치를 통하여, 용융 금속의 유출관의 관류량을 측정하기 위한 유닛 작동용 제어 장치에 도달한다.In the case of the method and apparatus described in EP 0 150 670, the eddy current applied to the molten metal as an exploring coil is used as a dimension for the distance between the measuring coil and the molten metal. In this case, the amount of eddy current on the surface of the molten metal is compared with the set point, and the flow rate of the molten metal is adjusted according to the difference between the set point and the present value. In the case of the device disclosed above, the measuring coil is fixed to an induction tube which can be configured to change in height. The maximum distance between the measuring head and the molten metal is about 20 mm. If it is necessary to further lower the level of the metal, the induction pipe can be lowered with the measuring coil. The disadvantage of this device is that it is not a linear measurement. During the casting, an impedance fluctuation occurs in the measurement coil when the metal level changes, because the eddy current applied to the measurement object is represented as ohmic loss. This impedance variation value reaches the control device for unit operation for measuring the flow rate of the outflow pipe of molten metal through the electronic device.
또한, 예를 들면 방사능원(radioactive source)으로서 주형을 Co60으로 뢴트겐 촬영하는 방사성 측정 장치들이 알려져 있다. 맞은편에서 측정되는 방사능 강도는 주형 내부를 채우는 용융체의 높이에 좌우된다.Also known are radiometric devices, for example roentgen imaging of the template with Co 60 as a radioactive source. The radioactive intensity measured on the opposite side depends on the height of the melt filling the mold interior.
방사능원 분해율(disintegration rate) 내의 통계학적 변동 때문에 생기는 평균 오류 비율이 비교적 크다는 단점 이외에, 방사성 물질을 투입하면 규칙적인 코팅이 점점 더 커지는 단점도 있다.In addition to the relatively large average error rate due to statistical variations in the radiation source disintegration rate, the addition of radioactive materials also increases the regular coating.
본 발명의 목적은 앞서 기재한 단점들을 방지하고, 액상 금속이 주형에 채워지는 높이를 탐지하고 제어하기 위한 방법 및 장치에 관한 것으로서, 필요한 모든 측정치를 활용하여 유지하기 적합하도록 레벨을 정확히 탐지하고 레벨의 변화시 레벨을 신속하고 안전하게 제어하는 데 있다.OBJECT OF THE INVENTION The object of the present invention relates to a method and apparatus for preventing and controlling the above mentioned disadvantages and for detecting and controlling the height at which liquid metal is filled in a mold, and accurately detecting and leveling levels so as to be suitable for use with all the necessary measurements. To control the level quickly and safely in the event of a change.
주조 분말의 두께를 또한 측정할 수 있다.The thickness of the cast powder can also be measured.
본 발명은 방법에 관한 청구항 1 및 장치에 관한 청구항 4의 특징들을 통해 전술한 목적을 달성한다.The present invention achieves the above object through the features of claim 1 relating to the method and claim 4 relating to the apparatus.
본 발명은 특히 용융 금속(molten metal) 위쪽에 배열되며 전해조 표면(bath surface)과의 간격을 산출하는 측정 헤드(measuring head)를 구비하는 철강용 연속주조 설비의 주형(ingot mold) 내에 있는 액상 금속의 레벨을 탐지하고 제어하기 위한 방법 및 장치에 관한 것이다.The invention relates to a liquid metal in a mold of a continuous casting installation for steel, in particular having a measuring head arranged above the molten metal and calculating a spacing from the bath surface. A method and apparatus for detecting and controlling the level of a.
도 1은 주형 내의 레벨을 탐지하고 제어하기 위한 장치의 개략도이다.1 is a schematic diagram of an apparatus for detecting and controlling levels in a mold.
도 2는 회전 캠(swivel cam)을 통해 측정 헤드와 결합된 회전식 액추에이터이다.2 is a rotary actuator coupled to the measuring head via a swivel cam.
도 3은 로프에 의해 측정 헤드와 연결된 수평 이동 가능한 제1 액추에이터이다.3 is a horizontally movable first actuator connected to the measuring head by a rope.
도 4는 레벨 및 주조 분말 두께를 탐지하기 위한 측정 유닛이다.4 is a measuring unit for detecting level and cast powder thickness.
<도면의 주요 부호에 대한 설명><Description of Major Symbols in Drawing>
공급supply
11. 공급 용기11. Supply vessel
12. 바닥 개구부12. Floor opening
13. 침전관13. Settling pipe
주조casting
21. 주형21.Mould
측정Measure
31. 제1 신호선(42)31. First signal line 42
32. 제2 신호선(71)32. Second signal line 71
33. 제3 신호선33. Third signal line
제어Control
41. 컴퓨터41. Computer
42. 레벨 측정 부재42. Level measurement member
43. 위치 센서43. Position sensor
44. 층두께 센서44. Layer Thickness Sensor
제어Control
51. 제1 제어선51. First control line
포지션position
61. 제1 액추에이터61. First Actuator
62. 제2 액추에이터62. Second Actuator
63. 제3 액추에이터63. Third Actuator
64. 피스톤 행정 유닛64. Piston Stroke Unit
65. 회전 유닛65. Rotating Unit
67. 견인 유닛67. Traction Unit
고정fixing
71. 연장 암71. Extension arm
72. 칼럼72. Column
73. 러그73.Rug
74. 스테이 바74. Stay Bar
75. 스위블 암75. Swivel Arm
76. 조인트76. Joint
77. 변위 장치77. Displacement device
78. 롤78. Roll
79. 체인 로프79. Chain Rope
폐쇄Closure
81. 밀폐 장치81. Seals
82. 마개82. Spigot
83. 슬라이더(13)83. Slider (13)
84. 주조 분말용 슬라이더84. Sliders for Casting Powder
S. 용융체S. Melt
G. 주조 분말G. Foundry Powder
본 발명은 주형 내로 장입되는 측정 헤드 및 전해조 표면 사이의 간격을 탐지하고, 연결 부재를 통해 측정 헤드와 연결되며, 주형 외부에 배치된 액추에이터(actuator)가 상하로 움직임으로써 그 간격을 일정하게 유지한다. 이와 동시에 액추에이터 및 측정 헤드 간의 연결 부재의 실제 위치를 파악하여 컴퓨터에 전달한다. 이때 컴퓨터가 처리한 제어 자료는, 주형 내 액상 금속의 유입량을 제어하기 위한 밀폐 장치(obturator)와 연결된 제2 액추에이터에 공급된다.The present invention detects the gap between the measuring head and the electrolytic cell surface charged into the mold, and is connected to the measuring head via a connecting member, and the actuator placed outside the mold moves up and down to keep the gap constant. . At the same time the actual position of the connecting member between the actuator and the measuring head is determined and transmitted to the computer. At this time, the control data processed by the computer is supplied to a second actuator connected to an obturator for controlling the flow rate of the liquid metal in the mold.
측정 헤드와 전해조 표면과의 간격이 변하지 않기 때문에, 측정 코일의 임피던스 변동도 전혀 나타나지 않는다. 그 결과 측정 오류의 발생을 방지할 수 있다.Since the distance between the measuring head and the surface of the electrolytic cell does not change, no impedance variation of the measuring coil is seen at all. As a result, occurrence of a measurement error can be prevented.
주형 밖으로 연결된 연결 부재들은 측정 기술상 파악하기 쉽다. 따라서 밀폐 장치와 연결된 제2 액추에이터를 통한 액상 금속의 주형 내 유입량 제어는 매우 정확하게, 특히 고속으로 이루어진다.The connecting members connected out of the mold are easy to grasp in the measurement technique. The control of the inflow rate of the liquid metal into the mold via the second actuator in connection with the closure device is therefore very precise, in particular at high speed.
측정 헤드가 용융 금속 레벨의 간격을 탐지하기 위해 일정한 간격으로 유지되기 때문에, 금속 전해조 표면에 있는 주조 분말의 높이가 간단히 파악되고 제어될 수 있다.Since the measuring head is held at regular intervals to detect gaps in the molten metal level, the height of the cast powder on the surface of the metal electrolyzer can be simply identified and controlled.
본 발명의 바람직한 실시예에서는, 측정 헤드의 주형 내에서의 상하 동작을 탐지하기 위해 액추에이터를 수직 또는 수평 또는 회전 작동시킨다. 이때 액추에이터 및 측정 센서 사이의 연결 부재는 하나의 로드(rod)일 수 있거나, 체인(chain) 내지 로프(rope)일 수도 있다. 이런 부재들은 모두 연속주조 설비의 고정형 주형 영역 내의 매우 거친 환경에 적합하다.In a preferred embodiment of the invention, the actuator is operated vertically or horizontally or rotationally to detect the up and down motion in the mold of the measuring head. In this case, the connecting member between the actuator and the measuring sensor may be one rod or may be a chain or a rope. These members are all suitable for very harsh environments within the stationary mold area of continuous casting installations.
또 다른 실시예에서는, 측정 헤드 및 금속 표면 사이의 간격을 측정하기 위해 유도 부품(inductive component)으로 형성된 측정 부재와 동일한 위치에 주조 분말 두께를 탐지하기 위한 층두께 센서인 초음파 장치를 삽입한다. 이때 층두께 센서는 제3 신호선을 통해 컴퓨터와 연결되고, 컴퓨터는 제3 제어선을 통해 제3 액추에이터와 연결되며, 제3 액추에이터는 주조재 공급을 중단하기 위한 밀폐 장치와 연결된다.In another embodiment, an ultrasonic device is inserted which is a layer thickness sensor for detecting cast powder thickness at the same position as the measuring member formed of an inductive component for measuring the distance between the measuring head and the metal surface. In this case, the layer thickness sensor is connected to the computer through the third signal line, the computer is connected to the third actuator through the third control line, and the third actuator is connected to the sealing device for stopping the supply of the casting material.
본 발명의 실시예는 첨부한 도면에 도시되어 있다.Embodiments of the invention are illustrated in the accompanying drawings.
도 1은 용융체(S)가 들어 있는 공급 용기(feed vessel)(11)를 나타낸다. 공급 용기(11)는 침전관(immersion tube)을 구비하는 바닥 개구부(bottom opening) (12)를 갖는다.1 shows a feed vessel 11 in which the melt S is contained. The supply vessel 11 has a bottom opening 12 with an immersion tube.
침전관(13)은 고정 주형(21) 내로 장입된다. 주형 내에 있는 용융체(S)의 전해조 표면은 주조 분말(G)로 덮여 있다.The settling tube 13 is charged into the stationary mold 21. The surface of the electrolytic cell of the melt S in the mold is covered with cast powder G.
주형 내로 장입된 스테이 바(stay bar)(74)의 헤드 단부에 레벨 측정 부재(42)가 고정되어 있다. 스테이 바(74)는 러그(lug)(73) 및 칼럼(column)(72)과 함께 연장 암(extension arm)(71) 세트를 형성한다. 칼럼(72)은 제1 액추에이터의 피스톤(64)에 형성된다. 칼럼(72)은 수직으로 이동할 수 있으면서 회전 가능하도록 형성된다. 레벨 측정 부재(42)를 주형(21)으로부터 멀어지게 하거나 주형 쪽으로 가깝게 하기 위해서는 회전 운동이 필요하다.The level measuring member 42 is fixed to the head end of the stay bar 74 charged into the mold. The stay bar 74 forms a set of extension arms 71 together with lugs 73 and columns 72. Column 72 is formed in piston 64 of the first actuator. The column 72 is formed to be rotatable while being able to move vertically. In order to move the level measuring member 42 away from the mold 21 or close to the mold side, a rotational motion is required.
레벨 측정 부재(42)는 제1 신호선(31)을 통해 컴퓨터(41)와 연결된다. 컴퓨터(41)는 제1 제어선(51)을 통해, 피스톤 행정 유닛(64)을 제어하는 제1 액추에이터(61)와 연결된다.The level measuring member 42 is connected to the computer 41 through the first signal line 31. The computer 41 is connected to the first actuator 61 which controls the piston stroke unit 64 via the first control line 51.
연장 암(71)에 구비된 위치 센서(43)는 제2 신호선(32)을 통해 컴퓨터(41)와 연결되고, 컴퓨터는 제어에 적합하도록 제2 액추에이터(62)와 연결되며, 제2 액추에이터는 제2 피스톤 행정 유닛(68)을 제어한다. 제2 피스톤 행정 유닛은 마개로 형성된 연장 암(69)을 통해 밀폐 장치(81)와 연결된다.The position sensor 43 provided in the extension arm 71 is connected to the computer 41 via the second signal line 32, the computer is connected to the second actuator 62 to be suitable for control, the second actuator is The second piston stroke unit 68 is controlled. The second piston stroke unit is connected to the closure device 81 via an extension arm 69 formed of a stopper.
도 2에 도시한 제1 액추에이터(61)는 스위블 암(swivel arm)(75) 및 조인트(joint)(76)를 통하여 스테이 바(74)와 결합된다. 스테이 바(74)의 헤드 단부에 구비된 레벨 측정 부재(42)는 주형 내에 있는 용융체(S) 전해조 표면과 일정한 간격으로 제어될 수 있다.The first actuator 61 shown in FIG. 2 is coupled to the stay bar 74 via a swivel arm 75 and a joint 76. The level measuring member 42 provided at the head end of the stay bar 74 can be controlled at regular intervals from the surface of the melt S electrolyzer in the mold.
제1 액추에이터(61)는 회전 유닛(65) 상에 고정되어 있고, 레벨 측정부재(42)는 회전 유닛에 의해 필요에 따라 주형으로부터 멀어지거나 주형에 가까워질 수 있다.The first actuator 61 is fixed on the rotating unit 65, and the level measuring member 42 can be moved away from or close to the mold as required by the rotating unit.
도 3에서 제1 액추에이터(61)는 변위 장치(變位裝置)(77) 상에 배열된 견인 유닛(pull unit)(67)으로 형성되고, 변위 장치의 헤드 단부에 롤(roll)(78)이 위치한다. 롤(78)에 의해 유도되는 로프(79)의 한쪽 단부는 견인 유닛(67)과 결합되고, 로프의 다른쪽 단부에는 레벨 측정 부재(42)가 고정되어 있다. 로프(79)에 고정된 레벨 측정 부재(42)는 주형(21) 내로 장입된다. 견인 유닛(67)으로 간단히 끌어올림으로써, 레벨 측정 부재(42)를 주형(21) 위쪽 영역으로 이동시킬 수 있고, 그 다음에 변위 장치(77)가 작동함으로써 정지 위치 내지 수리 위치로 옮겨질 수 있다.In FIG. 3, the first actuator 61 is formed of a pull unit 67 arranged on the displacement device 77 and has a roll 78 at the head end of the displacement device. This is located. One end of the rope 79 guided by the roll 78 is engaged with the traction unit 67, and the level measuring member 42 is fixed to the other end of the rope. The level measuring member 42 fixed to the rope 79 is loaded into the mold 21. By simply pulling up to the traction unit 67, the level measuring member 42 can be moved to the area above the mold 21, and then the displacement device 77 can be moved to the stop position or the repair position by operating. have.
도 4는 도 1에 기재된 것처럼, 부재들을 전부 구비한 레벨 측정 부재(42)를 나타낸다. 여기서는 금속 용융체(S)의 유입량을 제어하기 위해 마개(82) 대신 슬라이더(slider)(83)를 구비하는 것이 유일한 차이점이다.FIG. 4 shows a level measuring member 42 with all members, as described in FIG. 1. The only difference here is to have a slider 83 instead of a stopper 82 to control the flow rate of the metal melt S.
도 1에 도시한 레벨 측정 부재(42)를 보완하여, 도 4에서는 층두께 센서(44)를 추가로 구비한다. 전해조 표면 상에 있는 주조 분말(G)의 층두께를 탐지하기 위한 층두께 센서(44)는 제3 신호선(33)을 통해 컴퓨터(41)와 연결되고, 컴퓨터는 제어에 적합하게 제3 제어선(53)을 통해 제3 액추에이터(63)와 연결된다. 제3 액추에이터(63)는 주조 분말(G)용 슬라이더(84)에 연결되고, 주조 분말은 저장 용기 내에 있으며 주형에 공급될 수 있다.Complementing the level measuring member 42 shown in FIG. 1, the layer thickness sensor 44 is further provided in FIG. A layer thickness sensor 44 for detecting the layer thickness of the cast powder G on the electrolytic cell surface is connected to the computer 41 via a third signal line 33, and the computer is adapted to control the third control line. It is connected to the third actuator 63 through 53. The third actuator 63 is connected to a slider 84 for cast powder G, which is in a storage container and can be supplied to the mold.
Claims (11)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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DE19860752.0 | 1998-12-23 | ||
DE19860752 | 1998-12-23 | ||
DE19918835.1 | 1999-04-20 | ||
DE19918835A DE19918835A1 (en) | 1998-12-23 | 1999-04-20 | Method for detecting and regulating the level of the liquid metal in a mold |
PCT/DE1999/004114 WO2000038858A1 (en) | 1998-12-23 | 1999-12-22 | Method for detecting and controlling the level of liquid metal in an ingot mold |
Publications (1)
Publication Number | Publication Date |
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KR20010089683A true KR20010089683A (en) | 2001-10-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020017008002A KR20010089683A (en) | 1998-12-23 | 1999-12-22 | Method for detecting and controlling the level of liquid metal in an ingot mold |
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KR (1) | KR20010089683A (en) |
DE (1) | DE19918835A1 (en) |
Families Citing this family (1)
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DE10312080A1 (en) * | 2003-03-19 | 2004-09-30 | Sms Demag Ag | Manipulator for guiding a sensor for acquiring the filling level of liquid metal in a continuous casting mold is fixed with a sensor using a detachable connection, especially a clamp on a mold or its water tank |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3346650A1 (en) * | 1983-12-20 | 1985-06-27 | Schweizerische Aluminium Ag, Chippis | Process and apparatus for the determination and control of a level of a metal melt |
DE19515316C1 (en) * | 1995-04-19 | 1996-08-29 | Mannesmann Ag | Method for operating a mold |
DE19529931C1 (en) * | 1995-08-02 | 1997-04-03 | Mannesmann Ag | Plate mold for the production of steel strands |
DE19746728C1 (en) * | 1997-10-13 | 1998-10-29 | Mannesmann Ag | Initiation of a casting process to produce an accurately dimensioned metal strip |
DE19753026C1 (en) * | 1997-11-17 | 1998-12-10 | Mannesmann Ag | Outlet unit for metallurgical vessels |
-
1999
- 1999-04-20 DE DE19918835A patent/DE19918835A1/en not_active Withdrawn
- 1999-12-22 KR KR1020017008002A patent/KR20010089683A/en not_active Application Discontinuation
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